Camshaft internal metal Labyrinth Seal (Bushing) Yamaha XS650
Camshaft internal metal Labyrinth Seal (Bushing) for advance rod. 2 used per camshaft on 1970-79 XS1, XS2, XS650, TX650 models (Points ignitions) and also required if using Boyer ignitions. Fits inside of camshaft and flush with ends (one each side). Note: These are usually missing from 1980-84's. OEM Ref.# 256-11155-00.